Spool-head



c. H. FOIINEY.

SPOOL HEAD.

APPLICATION FILED AuG.6. I9I9.

1,388,635. Pawn@ Aug, 23,1921.

lzrzesses Inventor @D By /felvzce ffr/z@ l 'Il' N z5 l kioz'torfzqyUNITED STATES PATENT OFFICE. y

CLARENCE HARRY EonNEY, `or `JERSEY CITY', NEw JERSEY, `AssIoNoa 'roEORNEY FIBnEooMrANY, or :Ensimv CITY; NEW *JEESEY.

SPOOL-HEAD.

Specification of Letters Patent.

Patented Auf". 23, 1921.

Application led August 6, 1919. Serial No. 315,585.

To all whom t may commet:

Be it known that I, CLRENCE H. FORNEY, a citizen of the United States,residing at Jersey City, in the county of Hudson and State of NewJersey, have invented certain new and useiiul Improvements in Spool-Heads, of which the following is a specification.

The main object of my invention is to provide a disk-Shape Spool head ofcard board of other .fibrous material which will have its outer edgehardened whereby said outer edge can be finished, for example by sandpapering, so as to present a smooth surface `and at the Same time thehead will be made more rigid and stronger than if the outer edge werenot hardened. For this reason, spool heads made in accordance with. mypresent invention are particularly well suitable for use on spools forcontaining silk where it is necessary to provide spool heads of maximum.rigidity with a minimum amount of weight.

This object, and other advantageous ends which will be describedhereinafter', I attain in the following manner, reference being had tothe accompanying drawing in which Figure l is a face view of adisk-shape card board spool head showing the same before the outer orperipheral edge is hardened,

Fig. 2 is a view of Similar nature to Fig. 1 showing the same after theouter or peripheral edge has been hardened in accordance with myinvention,

Fig. 3 is a transverse section taken on the line 33m-3 of Fig. 2, and

Fig. 4 is a front elevation of a spool made up of disk-shaped card boardheads having their peripheral edges hardened in accord ance with myinvention and Showing in dotand-dash lines the connecting core betweenthe heads.

Referring to the drawing, the outer peripheral edge portion 5 of thedisk-shaped card board spool head 6, as shownin Fig, l, is treated forexample by applying a solution of linseed oil thereto and baking thesame until the desired hardness is obtained. This hardened edge isindicated at 7 in Figs. 2, 3 and 4.

The disk-Shaped head is ,preferably provided with a central hole 8 andtwo oi these heads can be joined by a core 9, as shown in dot-anddashlines in Fig. a, to produce a spool.

It will be understood that a dish-shaped card board spool head withouthaving my improved hardened edge is incapable of being finished on theouter edge portion to the degree of smoothness possible when the edgeportion is hardened as above described, for the reason that the fibersof the card board do not hold together with su''liciei'it strength topermit the application of sand paper or a tool thereto without breakingapart. However, by hardening the outer edge portion as above described,the fibers at the outer edge portion are rmly bound together in acompact mass and as such can be operated upon by sand paper or a tool oiany character to provide a perfectly smooth finish. Furthermore, thehardened portion being circular and extending completely around the diskwill greatly strengthen the disk without adding undesirable increasedweight as above noted. In addition to this the core 9 can be secured bygluing or other Suitable means and as such the glue or other bindingmeans will penetrate the central unhardened portion of the disk so as topro vide a secure binder for the heads to the core.

Vhile I have described a certain manner of hardening the outer' edgeportion of my improved spool head, it will be understood that any otherprocess of hardening may be used without departing from the spirit oi myinvention, hence I do not limit myself to the precise manner oi"hardening set il'orth but consider that I am at liberty to make suchchanges and alterations as fairly come within the scope of the appendedclaims.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is l. A fibrous disk shape Spool head havingits outer integral edge portion hardened and other integral portionsadjacent its axis comparatively soft; substantially as described.

2. A brous disk shape spool head having its outer integral edge portionhardened and its central unhardened portion provided f g y 1,388,635

i with a hole whereby a spool core can be sename to this specificationin the presence of cured Atliiereto; substaitially asl described. twosubscribing Witnesses. 3. Y brous disk s ape spoo head having y itsouter integral edge portion hardened `and CLARENCE HARRY FORNE 5 itseentraiintegral rtion unhardened; Witnesses:

substantially as descri "dk n EMILY A. DAYTON, In testimony whereof Ihave signed my Tnos. J. NEwsAM.

